FEASIBILITY OF DEVELOPING AN HY-180/210 WELDMENT
Abstract
Base-metal studies completed during the sixth report period have indicated that excellent combinations of strength and roughness (60 ft-lb at 0 F in 2-inch-thick plate at a yield strength of 180 ksi) were obtained in vacuuminduction-melted production heats of 12Ni-5Cr-3Mo steel. One carbon- martensite age-hardened Laboratory-melted steel absorbed about 70 ft-lb (at 0 F) at a yield strength of 183 ksi after conventional quenching and tempering and 120 ft-lb at 180 ksi after rapid heat treatment. Some improvements in strength- toughness combinations have been observed, and special design and fabrication procedures offer promise of minimizing the strength requirements for an HY-180/ 210 weld metal. The resistance of promising HY-180/210 weldments to stress corrosion is being intensively investigated by conventional tests and by KIC stresscorrosion tests. A preliminary evaluation of the structural suitability of the most promising production materials is in progress. Although the HY-180/ 210 feasibility study is not quite completed, the development of an HY-180/210 weldment appears feasible, and a program outlining the approaches recommended for an HY-180/210 development program is being prepared.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1965
- Accession Number
- AD0616981
Entities
People
- A. M. Rathbone
- K. E. Dorschu
- Lew F. Porter
- S. T. Rolfe
Organizations
- U.S. Steel